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4UM85 Reduced-Shank Drill Bits

$36.55

Bulk orders will be discounted, please contact us.

High-speed steel drill bits provide more flexibility and absorb more shock and vibration than cobalt drill bits. Also known as Silver and Deming drill bits, these reduced-shank drill bits have a 1/2" shank and a drill diameter that is greater than 1/2". They can create larger holes than standard drill bits that have a 1/2" shank.

Product Number: 4UM85

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  • Description
Mfr Model 4UM85
Measurement System Fractional Inch
Drill Bit Size 59/64 in
Decimal Equivalent 0.9219
Maximum Drilling Depth 2-1/2 in
Overall Length 6 in
Shank Type Machining Straight
Finish Machining Black Oxide
Material Machining High Speed Steel
Primary Material Application Steel
UNSPSC 23171609
Country of Origin USA (subject to change)
Cutting Direction Right Hand
Flute Length 3-1/8 in
Flute Type Spiral
Standards Not Rated
Drill Bit Point Angle 118 °
Drill Bit Point Type Conventional Point
Number of Flutes 2
Spiral Direction Right Hand
Helix Angle 32°
Depth Dia Ratio 5xD
Shank Dia 1/2 in
Primary Material Application ISO Code P
Material Grade Machining General Purpose
Shank Length 2-7/8 in
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in/-0.0012
Secondary Material Application Non Ferrous Material
Secondary Material Application ISO Code M
Web Construction Tapered

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